MG-ADL scores were also significantly increased in the AChR+Titin-MG group [10 (8–13) vs. 8 (5–13) in the AChR-MG group, P = 0.018; and 6 (4–8) in the AChR+LRP4-MG group, P< 0.001]. This evidence concerns the gene LRP4 and myasthenia gravis.